UBI EasyCoder 501 – Service Manual
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26. TROUBLE SHOOTING, cont'd.
26.9
Cutter Troubles
• Is a cutter unit fitted and properly connected to the DIN-connector
inside the printer's front hatch and is the cable visibly undamaged?
• Make sure that a
CUT
command is transmitted in the current
program or that the cutter is enabled by means of a
CUT ON
statement.
• Is the printhead lifted? If so, lower the printhead.
• Is the cable from the printer's front to P-6 on the CPU board
correctly connected and undamaged?
• Verify that no paper shavings, residue from label adhesive , or
foreign objects obstruct the cutting operation. Clean as described
in chapter 12.3. If the cutter is stopped from completing a cutting
operation, the motor may be damaged by overload.
• Measure the voltage P24 between pin 1 (+24V) and pin 3 (ground)
of connector P-6 on the CPU board, when a
CUT
command is
being issued.
Pin 2 should get a supply voltage of almost 24V.
Pin 5 is connected to an internal, home position-sensing
microswitch of the cutter. The microswitch must be opened,
disconnecting ground from pin 5. At the very end of a cutting
cycle, pin 5 is again connected to ground, when the microswitch
closes.
• The return spring in the cutter mechanism could eventually get
slack and need to be replaced.
• If no cause of malfunction could be found, the cutter is probably
defective.
